Abstract:
A device (100, 200, 300) includes a chamber having an air inlet (210), an air outlet (220), and a plurality of stages (120A-120N) including at least a first stage (120A) adjacent a second stage (120B). The plurality of stages (120A-120N) are disposed in the chamber and each stage (120A) has a plurality of discharge electrodes (150) disposed in an interior region and is bounded by an upstream baffle (130A) on one end and a downstream baffle (132A) on another end. Each stage (120) has at least one sidewall (160) between the baffles (130A, 132A). The sidewall (160) is configured as a collection electrode and has a plurality of apertures (140) disposed along a length between the baffles (130A, 132A). The upstream baffle (130A) of the first stage (120A) is positioned in staggered alignment relative to the upstream baffle of the second stage (120B).
Abstract:
The present invention relates to an apparatus and method for removal of particulate matter from a gas. The proposed apparatus (1) comprises an inlet (2) for receiving a contaminated gas (6a) comprising particulate matter, and for inducing a swirl to said contaminated gas (6a). A cyclonic separation stage (3) including a first flow-path (7) is provided for separating a portion of the particulate matter from the swirl-induced contaminated gas (6a) by centrifugal action, to produce a partially clean gas (6b). An ionization stage (4) including a second flow-path (8) is provided for ionizing the particulate matter remaining in the partially clean gas (6b) by producing a corona discharge in the second flow-path (8). A particle collection stage (5) including a third flow-path (9) is provided for separating the ionized particulate matter from the gas by means of an electric field across the third flow-path (9), to produce a clean gas (6c). The ionization stage (4) and the particle collection stage (5) are arranged such that the third flow-path (8) has an increased cross-sectional area relative to the second flow-path (8).
Abstract:
Die Erfindung betrifft Elektrofilter, umfassend ein Gehäuse mit einem Abschnitt von zumindest annähernd kreisförmigem Querschnitt zur Durchleitung eines partikelführenden Gasstroms in zu dem Querschnitt senkrechter Längsrichtung (L), wobei in dem Gehäuse eine Mehrzahl von Niederschlagsplatten angeordnet sind, die unter Bildung von sich in der Längsrichtung erstreckenden Gassen parallel zueinander ausgerichtet sind, wobei in zumindest einigen der Gassen jeweils zumindest ein Elektrodenrahmen (1) mit einer Mehrzahl von länglichen Elektroden (8) angeordnet ist, deren Beaufschlagung mit einer Hochspannung zu einem Abscheiden von in dem Gasstrom geführten Partikeln auf den Niederschlagsplatten führt, wobei die Elektroden (1) nur an einem Tragholm (3) des Elektrodenrahmens (1) ortsfest fixiert sind.
Abstract:
The invention relates to a plant (100) for the gasification of biomass. It comprises a gasifier (10) and an apparatus (23) for the filtration of the gas. The apparatus comprises a scrubber (31), a tank (41), and a wet electrostatic precipitator (51). The scrubber is in fluid communication with the gasifier and with the tank, and is adapted for the injection of a washing liquid in the gas flow. The tank comprises a bottom area adapted for collecting the liquid and a top area adapted for holding the gas, separated by gravity. The wet electrostatic precipitator is in fluid communication with the top area of the tank, so as to receiving only the gas. The invention further relates to a gasifier comprising a gasification reactor (12), a grate (125) for the support of the biomass in the reactor (12) and a plug (126) for closing the middle part of the grate. The plug is vertically movable so as to close and/or open the middle part of the grate.
Abstract:
A device for remediation of gaseous or aerosol streams includes an elongated duct, at least one high potential electrode and at least one low potential electrode The elongated duct defines a bore through which axially flows a gaseous or aerosol stream which is treated by the device to remove pollutants or particulates therefrom A rotatable shaft within the bore of the duct includes a plurality of pins extending radially therefrom, constituting the high potential electrode The duct may include a plurality of pins extending radially into the interior bore of the duct, whereby they constitute the low potential electrode The shaft is rotated by a motor relative to the duct, or the duct and shaft may be rotated together by the motor The high and low potential electrodes are connected to a high voltage power source to effect a corona discharge between the high and low potential electrodes.
Abstract:
A device separates particulates from a gas stream flowing through the device. The device includes at least one high voltage electrode and a substantially cylindrical separator. The high voltage electrode applies a first voltage to the gas stream. The separator has an inlet for introducing the gas stream into the separator tangentially to an interior wall of the separator, a particulate outlet for expelling the particulates from the separator, and a gas stream outlet.
Abstract:
Known wet electrostatic precipitators are large and inefficient. The present invention enables the production of smaller, more efficient and long lasting wet electrostatic precipitators by the addition of a central bore in the inner electrode through which a first purge flow is passed and directed into the precipitator chamber, perpendicular to the direction of flow of the gas to be treated through the chamber to urge the particulate into the water curtain. A second, larger, cleaning purge flow is also provided to disturb the water curtain such that it cleans the inner electrode of any deposited particulate.
Abstract:
A high-efficiency dust collector is disclosed. The dust collector includes at least one electrode formed of a carbon fiber to generate ions by ionizing molecules in air, a charged dust collecting filter to collect foreign substances charged by ions generated by the electrode, and a grounded ion trap to collect the ions generated by the electrode.